EP0750328B1 - Lasttrennschalter - Google Patents

Lasttrennschalter Download PDF

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Publication number
EP0750328B1
EP0750328B1 EP96401331A EP96401331A EP0750328B1 EP 0750328 B1 EP0750328 B1 EP 0750328B1 EP 96401331 A EP96401331 A EP 96401331A EP 96401331 A EP96401331 A EP 96401331A EP 0750328 B1 EP0750328 B1 EP 0750328B1
Authority
EP
European Patent Office
Prior art keywords
control shaft
electromagnet
switch
shaft
vacuum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96401331A
Other languages
English (en)
French (fr)
Other versions
EP0750328A1 (de
Inventor
Paul Rozier
Joachim Dams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0750328A1 publication Critical patent/EP0750328A1/de
Application granted granted Critical
Publication of EP0750328B1 publication Critical patent/EP0750328B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6667—Details concerning lever type driving rod arrangements

Definitions

  • the present invention relates to a self-isolating switch at medium voltage, usable up to 36 kV, with possible extensions up to 72 kV.
  • This device finds application in the realization of cells and substations medium voltage, indoor or outdoor.
  • an auto-disconnector switch a device electric having the power to cut an intensity nominal, most often 400, 630 or 1250 amps and which, when in the open position, present between its terminals excellent dielectric strength, at least equal to that which is required for disconnectors.
  • the self-disconnecting switch of the invention is derived from the self-isolating circuit breaker that was the subject of European patent application EP-A-0 543 681, the principle is recalled now.
  • Such a self-disconnecting circuit breaker includes, for each pole, an insulating bushing enclosing a light bulb empty, the crossing comprising at a first end a first contact connected to a first terminal of the light bulb empty and at a second end a second contact connected to a second terminal of the vacuum interrupter, the bushings being fixed to a metal profile along which is disposed a operating shaft common to vacuum interrupters and operated by a command to operate the vacuum bulbs contained in a box integral with the profile, the latter being actuated in rotation to ensure the sectioning function.
  • Such a self-disconnecting circuit breaker allows filling the current cut and disconnect functions, and, therefore, it is equivalent to a circuit breaker framed by two disconnectors. Its construction is economical, its reduced dimensions, its maintenance is facilitated by the causes the poles to be in the sectioning position housed in an extractable drawer under full tension security.
  • the subject of the invention is a self-isolating switch three-phase characterized in that it comprises three insulating bushings each containing a vacuum interrupter, the crossings being integral with a beam which can pivot inside a chassis, the vacuum bulbs being operated by a control shaft associated with an operating mechanism, the beam being secured to a spring-rotating member shift from neutral, the switch opens by the successive operation of the control shaft and of the member for rotating the beam.
  • the drive shaft is of the rickshaw type, the operation comprising an electromagnet.
  • control shaft is a rotary shaft, the mechanism operation comprising an electromagnet.
  • the electromagnet is supplied until passing through the neutral point of the setting member rotation at neutral.
  • reference 1 designates a chassis tubular, fitted with rollers 2, intended to be placed at the like a pull-out drawer, in a non-closet represented.
  • a horizontal beam 4 is articulated by its two ends 4A and 4B to plates 5A and 5B fixed to the chassis, so that a movement of 90 ° rotation around its longitudinal axis.
  • the beam 4 is at the potential of the earth.
  • a shaft 10 of command to open and close the poles which can be actuated by rotation or by translation.
  • this tree 10 is a tree of the "rickshaw" type, since it acts by moving in translation along its own axis, under the action an electromagnet coil 12; the control mechanism of the poles is explained with reference to pole 7B: the rod mobile 12B of the vacuum interrupter 9B is connected to a first end of a metal rod 13B articulated around a axis 14B integral with the crossing 7B; the second end of the connecting rod 13B is articulated at a first end an insulating rod 15B capable of withstanding the voltage of operation of the device; the second end of the insulating rod 15B is articulated in a light 17B of a first end of a metal bracket 18B whose second end 19B is articulated on the control shaft 10.
  • the bracket 18B pivots around an axis 20B secured to the beam 4. Displacement in translation along its axis of the shaft 10 causes the rotation of the bracket 18B and this movement is communicated to the control rod 12B by the connecting rods 15B and 13B.
  • the tree 10 preferably has a rectangular section in its part between the joints, to allow fixing easy from the brackets; on either side of these joints it preferably has a circular shape, to slide freely through plates 5A and 5B.
  • control shaft 10 for operating the bulbs is housed inside the joints of the beam 4, shaft 10 moving completely in translation independently of the rotational movement of the beam 4.
  • the pole 7B has a first socket 24B cooperating with a 25B current supply, and a second socket 26B cooperating with a bar 27B.
  • the others poles have the same sockets cooperating with the same homologous elements.
  • Insulating covers such as 29C provide insulation between the poles.
  • the pole is in the configuration of Fig. 1
  • the coil of the electromagnet 12 is excited, which has effect of moving the shaft 10 in translation, causing the opening of the vacuum ampoules.
  • the abrupt pivoting of 90 ° is caused by the beam 4, which causes the sectioning of the poles. From that the passage through neutral is carried out, at the latest when the disconnection is completed, the feeding is stopped electromagnet; under pressure atmospheric, the vacuum ampoules close.
  • the closure can be effected by rotation of the beam, the contacts of the vacuum interrupter remaining open.
  • the current in the main circuit is then established at the end of rotation by closing the bulb contacts at empty.
  • a cam 30 is secured to the beam 4 by a tube 31 passing through plate 5A in which it can pivot freely; we note that inside this tube passes the tree 10 for operating the poles. We denote by O the trace of the axis of rotation of the cam 30.
  • Cam 30 is articulated at a first end A a 30A spring which is kept compressed when the switch is in the closed position.
  • the second end B of the spring 30A is fixed to the plate 5A.
  • the spring pushes the cam in the direction tending to rotate it in the opposite direction clockwise.
  • the angle between the axis AB of the spring 30A and line AO is slightly less than 180 degrees of angle.
  • the cam is kept stationary by a lug 32 fixed to a nut 33 movable in translation on a threaded rod 34 can be rotated by a motor 35; the nut 34 is immobilized in rotation by slides 36 and 37; the lug cooperates with a first shoulder 30 'of the cam, which has a second 30 "shoulder.
  • the operation is as follows: immediately after the opening of the poles, or with a given delay, the motor 35 is actuated in rotation, causing the displacement of the lug 32 to the right of FIG. 2, which rotates the cam 30 in the direction clockwise. As soon as the line AB passes the neutral line, the spring 30A suddenly relaxes and causes the cam and all the mobile assembly which is integral with it to rotate rapidly, that is to say beam 4 and poles.
  • the switch is closed by operating the motor opposite to the direction used for opening; the lug, in abutment on the shoulder 30 ", drives the cam counterclockwise, until neutral is passed, with compression of spring 30A; after which the lug is returned to the position in abutment against the lug 30 ', ready for a new interruption.
  • Figs. 4 and 5 illustrate another mode actuation of the vacuum ampoules; in these figures, the elements common to these figures and to figures 1 to 3 have been the same reference numbers.
  • Vacuum bulbs are driven by a shaft turning 40; the 18B square is this time replaced by a connecting rod 41B, the rest of the control mechanism being unchanged.
  • the shaft 40 is driven by a connecting rod 43 itself driven in rotation by a shaft 44 moved in translation by an electromagnet 45.
  • the motor 35 is provided with a crank 50 allowing manual control of sectioning.

Landscapes

  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Claims (4)

  1. Dreiphasen-Lasttrennschalter, umfassend drei isolierende Durchgänge (7A, 7B, 7C), die jeweils eine Vakuumröhre umfassen, wobei die Durchgänge mit einem Träger (4) verbunden sind, der im Inneren eines Chassis (1) wippen kann, wobei die Vakuumröhren mit Hilfe einer Steuerwelle (10, 40) bewegt werden können, die mit einem Handhabungsmechanismus (12, 45) verbunden ist, wobei der Träger mit einem Organ (30) verbunden ist, das durch eine Feder (30A) zur Überwindung des Totpunktes in Drehung versetzt wird, wobei die Öffnung des Trennschalters durch die aufeinanderfolgende Betätigung der Steuerwelle (10, 40) und des Organes (30) zur Drehung des Trägers (4) erfolgt.
  2. Trennschalter nach Anspruch 1, dadurch gekennzeichnet, dass die Steuerwelle (10) gedrückt und gezogen werden kann, wobei der Handhabungsmechanismus einen Elektromagneten (12) umfasst.
  3. Trennschalter nach Anspruch 1, dadurch gekennzeichnet, dass die Steuerwelle eine Drehwelle (40) ist, wobei der Handhabungsmechanismus einen Elektromagneten (45) umfasst.
  4. Trennschalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Elektromagnet (12, 45) bis zum Durchgang durch den Totpunkt des Organes (30) versorgt wird, um dieses über den Drehpunkt zu drehen.
EP96401331A 1995-06-22 1996-06-19 Lasttrennschalter Expired - Lifetime EP0750328B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9507495 1995-06-22
FR9507495A FR2735899B1 (fr) 1995-06-22 1995-06-22 Interrupteur auto-sectionneur

Publications (2)

Publication Number Publication Date
EP0750328A1 EP0750328A1 (de) 1996-12-27
EP0750328B1 true EP0750328B1 (de) 1999-10-13

Family

ID=9480279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401331A Expired - Lifetime EP0750328B1 (de) 1995-06-22 1996-06-19 Lasttrennschalter

Country Status (5)

Country Link
EP (1) EP0750328B1 (de)
AT (1) ATE185649T1 (de)
DE (1) DE69604621T2 (de)
ES (1) ES2138303T3 (de)
FR (1) FR2735899B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19850202A1 (de) * 1998-10-23 2000-04-27 Siemens Ag Schaltanlagen mit in Gehäusen angeordneten Schaltgeräten
DE102011017815B3 (de) * 2011-04-29 2012-10-11 Siemens Aktiengesellschaft Schaltgerät
CN116844910B (zh) * 2023-06-28 2024-05-24 江苏宏达电气有限公司 一种隔离内置全绝缘立柱式深度融合断路器及互锁方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2653266B1 (fr) * 1989-10-16 1995-11-24 Merlin Gerin Dispositif de commande d'un disjoncteur a haute tension et a poles separes.
US5134256A (en) * 1990-11-02 1992-07-28 G & W Electric Company Puffer interrupter switch
FR2683940B1 (fr) * 1991-11-20 1993-12-31 Gec Alsthom Sa Disjoncteur a moyenne tension pour l'interieur ou l'exterieur.

Also Published As

Publication number Publication date
DE69604621T2 (de) 2000-05-04
FR2735899B1 (fr) 1997-08-01
FR2735899A1 (fr) 1996-12-27
EP0750328A1 (de) 1996-12-27
DE69604621D1 (de) 1999-11-18
ES2138303T3 (es) 2000-01-01
ATE185649T1 (de) 1999-10-15

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